Maintaining Storage Arrays

This section contains the procedures about how to maintain a storage system in
a running cluster. Table 3–1 lists
these procedures.

Note –

When you upgrade firmware on a storage device or on an enclosure, redefine
the stripe size of a LUN, or perform other LUN operations, a device ID might change
unexpectedly. When you perform a check of the device ID configuration by running the scdidadm -c command, the following error message appears on your console
if the device ID changed unexpectedly.

device id for nodename:/dev/rdsk/cXtYdZsN does not match physical
device's id for ddecimalnumber, device may have been replaced.

To fix device IDs that report this error, run the scdidadm -R command
for each affected device.

When you upgrade firmware on a storage device or on an enclosure, redefine
the stripe size of a LUN, or perform other LUN operations, a device ID might change
unexpectedly. When you perform a check of the device ID configuration by running the scdidadm -c command, the following error message appears on your console
if the device ID changed unexpectedly.

device id for nodename:/dev/rdsk/cXtYdZsN does not match physical
device's id for ddecimalnumber, device may have been replaced.

To fix device IDs that report this error, run the scdidadm -R command
for each affected device.

Stop all I/O to the storage arrays you are upgrading.

Apply the controller, disk drive, and
loop-card firmware patches by using the arrays' GUI tools.

For specific instructions, see the array's online
documentation.

Confirm that all storage arrays that
you upgraded are visible to all nodes.

This procedure defines Node A as the node that is
connected to the node-to-switch component that you are replacing. This procedure
assumes that, except for the component you are replacing, your cluster is
operational.

How to Replace a Host Adapter

Use this
procedure to replace a failed host adapter in a running cluster. This procedure
defines Node A as the node with the failed host adapter
that you are replacing.

Before You Begin

This procedure relies on the following prerequisites and assumptions.

Except for the failed host adapter, your cluster is operational
and all nodes are powered on.

Your nodes are not configured with dynamic reconfiguration
functionality.

If your nodes are configured for dynamic reconfiguration and you are using two entirely separate hardware
paths to your shared data, see the Sun Cluster Hardware Administration
Manual for Solaris OS and skip steps that instruct you to shut
down the cluster.

PatchPro is a patch-management tool that eases the selection and download of patches required
for installation or maintenance of Sun Cluster software. PatchPro provides
an Interactive Mode tool especially for Sun Cluster. The Interactive Tool
makes the installation of patches easier. PatchPro's Expert Mode tool helps
you to maintain your configuration with the latest set of patches. Expert
Mode is especially useful for obtaining all of the latest patches, not just
the high availability and security patches.

To access the PatchPro
tool for Sun Cluster software, go to http://www.sun.com/PatchPro/, click Sun Cluster, then
choose either Interactive Mode or Expert Mode. Follow the instructions in
the PatchPro tool to describe your cluster configuration and download the
patches.

If yes, choose and configure another device to be the new quorum device.
Remove the old quorum device. For procedures about how to add and remove quorum
devices, see your Sun Cluster system administration documentation.

Replace the failed disk drive.

(Optional) If the new disk
drive is part of a logical volume that you want to be a quorum device, add
the quorum device.

For the procedure about how to add a quorum
device, see your Sun Cluster system administration documentation.